Which is a fine-grained igneous rock made up primarily of pyroxene and plagioclase feldspar? a. granite b. gabbro c. basalt d. rhyolite

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Danwild · Answer 1 · 2021-07-09T19:19:28+0000

A. Basalt

Basalt is a fine-grained, dark-colored extrusive igneous rock composed mainly of plagioclase and pyroxene. The specimen shown is about two inches (five centimeters) across. Diorite is a coarse-grained, intrusive igneous rock that contains a mixture of feldspar, pyroxene, hornblende, and sometimes quartz.

Which is a fine-grained igneous rock made up primarily of pyroxene and plagioclase feldspar? a. granite b. gabbro c. basalt d. rhyolite

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